<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>vue07</title>
</head>
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<body>
      
    
        <input v-model="message" placeholder="edit me">
        <p>Message is: {{ message }}</p>
    <script>
       new Vue({
           el:'#id-1',
           data: {
               message: ''
           }
       })
    </script>
</body>
</html>